The 'shared-linkable' property

[james.mansion@…]

From the boost-build mailing list:

So ... The compilation switches that need to be applied to a source file to create an object should really relate to whether it will eventually be directly linked into an executable, or linked into a DLL. It should not be determined by whether it gets aggregated into a static library as an intermediate step.

This can be done by creating new property <shared-linkable>, that control if the object file will eventually end up in a shared library.

[ghost]

I think the ideal approach is to add shared-linktable feature. When building a shared library, thisfeature should be set to on, so that all dependencies are also built with that property. The problems are:

1. The linking-generator already gets the source targets, so it's to late to add a property to build request for dependencies.

2. If this property is not set for exe, then we'll get extra element in target path, which is undesirable.